Sig Sauer MPX Copperhead, 3.5in. SBR, Coyote (PMPX-3B-CH)

This SBR is regulated by the ATF and requires a one time tax-stamp fee of $200.


MSRP: $2,079.99

Availability Only 1 left in stock


The MPX Copperhead features a monolithic Elite Series Cerakote finish upper receiver, with an integrated stock knuckle lower, and a 3.5 barrel with integrated muzzle brake. It comes equipped with the SIG SAUER Pivoting Contour Brace (PCB) giving pistol users a brace that easily adapts to the movement of the shooter’s arm with a patented swivel operation for perfect placement, and can be rapidly deployed.

The SIG MPX redefines the submachine gun category with a new level of operator safety, in-field adaptability and proven reliability in the harshest environments. It features dual-sided selector switch, magazine release, charging handle and bolt release. The SIG MPX operates from a fully-closed and locked rotating bolt, offering enhanced reliability and safety in use.

A short-stroke gas piston allows the SIG MPX to run all weights and brands of 9mm ammunition with no adjustments to the gas valve.

NFA DISCLAIMER: This firearm is a regulated item by the National Firearms Act (NFA). Please check with your local and state municipalities for any further regulatory requirements. It is the buyer’s responsibility to make sure they comply with all NFA rules and applicable laws.

Color/Finish Coyote Elite Cerakote
Capacity 20Rd.
Weight 4.50 lbs
Type AR-Style Platform
OAL 14.50"
Country of Origin USA
Action Semi-Auto
Barrel 3.50"
Twist 1:10"
Caliber/Gauge 9mm
Sights None, Optic Ready
Stock Folding Pivoting Contour Brace
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